Spinning-frame.



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CHARLES D. WHITE, 0F NORWICH, CONNECTICUT.

SPINNING-FRAME.

Application led September 17. 1917.

To rfl/ frito/n t may concern.'

lie `it known that I, Cumulus l). Wnrrn, arcilizen of the linited` States, residing' at Norwich. in the county of New London` in the State of (onnecti .ut,,have invented a certain new and useful improvement in Spinaing--l"rames. of which the following;l is a, specilication, reference beingr had to the accompanyina drawings.

This invention relates particularly to the .drawing rolls and twisting mechanism of spinning machinery of the type commonly used in cotton mills; the immediate object oli said invention beingr to overcome a common tcndenev ,on the partof'the yarns to break atv the point where they leave the so called "front" rolls, as l will explain more fully hereinafter. y The annexed drawings, when taken` in connection with the specification, will'aid in explaining my invention, Figure l. of said drawings being mainly a transverse, sectional view of one set of drawing rolls and an elevation of a portion of one of the bobbins. Fig. 2 is' a front side view yof the special carrier rolls y and shaft y which forms one elementary.feature of my present improvement, and Fig. 3 ie a. relatively enlartred view of a section of said shaft.

Referringr t-o these drawings, the letter rt indicates a portion of the top rail of a. ring spinning frame and denotes a portion of a bobbin which, it is assumed, is mounted on a spindle in the usual, or any other practical manner wird havingcooperating with it" the customary ring' traveler c.

Fixedly se.- euredto the frame o are brackets (l n1 which are revolubly mounted vthecustomary drawing rolls which eonsists,as here shown, of

three pairs of rolls known usually as the drawing rolls Ye and the front or delivery rolls f. t

Front these front. rolls the yarns pass ordinarily over or through a guide eye and thence to the ringspinning mechanism and take-up bobhin b, the arrangement of the described parts being ordinarily such that the yarn, after being freed from the bitingr action of the periphery of the front roll, leads downward andthus remains in con- -tact with the lower front roll for a considerable distance instead of being immediately released from the biting action of said front Y rolls,

and I have found, 'by long experience, that such contact with the lower front roll t operates frictionally, as a drag, to hinder Specification of Letters Patent.

Patented Oct. 8, 1918.

Serial No. 191,700.

the twistilngr of the untwisted revint,r at that point: thus leavingr the varn weakest at that point' and liable to break. In order to` overcome this ol-ijectionable result Ithave provided simple but etl'ective meansI -whereb v the drawn varn is de i'vcred from the front rolls through a path that alines with the path of the roving as the latter passes between the several pairs'o'lf rollsl instead of beine' directed slightly downward. as heretofore. and thisl result l attain by providing what l term a cari-ier" roll Il] which is journaled in a special bracket /1 which is lsecured to the bracket r/ by screws 7L as here shown.

As the varn (indicated by the letter ar) leaves thefront rolls; it 'out'inues in alright line of movement to the' carrier rollj/ and thence downward to the twisting, mechanism and take-up bobbin. The varn thus passes directlyv and freely from the point where it is released from the bite of the front rolls tothe described carrier roll with no tendency to dragl frictionally along the upper portion ot' the lower roll, in the objectionable manner tiret above described by me.

The carrier roll shaft g is driven (in the machine of the dra wing) by means of a gear 'f on the lower lfront roll f which meshes with a like. gear 7u on the carrier roll shaft,

this construction being such that the carricr rolls are caused to revolve in the opposite direction from the said lower front rier roll g, while the torsional strain of the yarn is relieved at its upper portion, (where `it contacts with the carrier roll), by reason of the reverse rotative movement of sald carrier roll; the twlst belng 1n e'ect carried over and past the point of contact with said roll and 1s thus permitted to work back to the biting point between the two front rolls.

The 'carrier roll longitudinally and fianged, as illustrated, in order that the twist in the yarn may then more readily adjust itself (by slipping torrolls and g is preferably fiuted .the evenness of twist and elimination of sionally) as 'the twist is transferred, or extended, to that portion of the yarn between the carrier roll and the front rolls.

By the aid of the carrier roll located as described the tendency on the part of the Yarn to break is materially reduced, as I iavev den'ionstrated by a practical and continued trial -of such rolls, and my described improvement has the decided advantage that it can be added to spinning frames as now commonly constructed, with very little cost. The yarn is twisted to the bite of the fronty rolls, the thread-board guides, heretofore necessary, are done away with and, owinf,r to

riction.. a traveler double the ciistomar weight can be need.; thuS making it possib e to put about more `varn on the bobbin. Ane otliervdecided advantage derived by the lise of my described carrier roll is in the fact that no lint bunchesl are formed in the yarn, since the elimination of the thread boards allows all lint and diietto drop to the fioor instead of lodging on said thread boards.

The described construction and 'action makes it possible to maintain the twisted yarnv clear back to said biting point instead .of leaving,Y at all times, a short portion ot' theV untwisted, and relativelyweaker, roving wrapped around a portion of the pei'- inieter of the lower front' roll and, inord'er board.

to produce the best results, it isf'gtle'aiiaible" located between the drawing rolls andi'the tfwisting mechanism. and means for revolv- .in-g said roll in a diiiection o'ppoaite to the.

moveinyeut of-the yarn'g'ilie position of lsaid carriertrollblcing in' alinement with both the Spindlel and the bite of thtl fitontdraft roll and'at a efiiisiderahledisltance above the top th'espiiielle where iy thi use ot' a much longer bobbi'n will'l bepermitted than is possible byI the iisiiallocation of the guide-wire att-ached to the iii/ boardv L Y 2. Iit a spinning'g frame.' a longitudinally tinted carrier roll located between the drawina@` rolls and thc twisting mechanism; the, position ot said carrier roll beingr in alineineiit with both the spindle and the bite of the front draft roll and ,at a considerable distance above the top of thespindlc whereb v the liscof a milch longer bol'iliin will be permitted than is possibleby the -in: ial location of thc'griiide wire attache( lthe fluy @nannte n. wni'ric. 

